Reciprocating engine and turbine



Aug. 26, 1930.

H.- WACH nmcxrnocnme ENGINE AND TURBINE mm se i. 15, 1926 m N a R s .m IE W I,

Patented Aug, 26, 1930 p i I IY'UNITED STATES PATENT oFFicE HANS WACH, FWESERMUNDE-LEHE, GERMANY RECIPROCATING ENGINE AND TURBINE Applicationflied September 15, 1926, Serial No. 135.656, and in Germany March 8,1926.

My invention relates to a reciprocating alignment. Flanges c are alsokept in corengine and more mrticularly to a combined rcct positiolhbybearing i so that should the reciprocating engine and turbine bothactbearing (1 become worn. the hollow shaftg ing on the same shaftwherein the crank will remain in true alignment, and the'gear shaft, ora prolongation thereof, of the rewheels of the transmission will remainpropciprocating engine is connected through a erly in mesh which is ofgreat importance. transmission gear to another shaft either Asillustrated, a thrust bearing is for the for imparting additional powerto it or for hollow shaft d may be also provided which receiving powertherefrom. thrust bearing becomes independent of the In such a case itis of great importance wear of bearing a. I i that the gear wheels turntruly, as otherwise Fig. 2 shows a modification of Fig. 1, they do notmesh accurately. wherein the hollow shaft Ll carrying the As iswell-known, the crank shaft of a regear wheels 7. m surrounds the crankshaft ciprocating engine may easily get slightly and is coupled to it ora prolongation thereof 15 out of true alignment. at p. If desired, bothends of the hollow In an arrangement of this type, accordshaft (1 may becoupled to the crank shaft. ing to the present invention, the b aringThe hollow shaft is mounted in bearings r the gear wheel is such that itremains unafand s independent of the crank shaft. fected by anydeviation or distortion of the I cl i 20 crank shaft. 1. In combinationwith a power shaft and According to one embodiment of the inbearingstherefor, bearings independent of vcntion there is keyed 011 a pro g i nof the hearings of said power shaft, a coaxial the crank shaft beyondits end bearing ahOlhollow shaft journaled in said second men- 25 lowshaft journalled in a bearing and conti ned hearings and engaged oversaid power nectcd to a second shaft, the Said ho w shaft opcrativelyconnected with said power shaft carrying the transmission gear shaft soas to rotate therewith and to allow The invention is illustrated in thetwo play of said power shaft, transmission gears figures of theaccompanyin drawing where mounted on said hollow shaft for tiansmitashaft is rotated by a com ined r p ting power to .or from said hollowshaft and 30 ing engine and turbine. thereby said power shaft. apropeller shaft According to Fig. 1, a iS t e d h ri g coaxial with saidpower shaft. and said holof a crank shaft 1 of a reciprocating engine,low shaft and connected at one end with one a prolongation thereof, asillustrated, being end of said hollow shaft and bearing means formed byall intel'l c hlte af p d to for said propeller shaft independent ofsaid the crank shaft proper by flanges h. (Z s it first and secondmentioned bearings. hollow shaft keyed to shaft 9 and rotating .2 Thombination as specified in claim in bearings 71 and shown in the (l 1,including a thrust bearing for said hollow ings hollow shaft 1? carriestwo gear wheels h ft, v

Z-m which mesh with gear wheels of a trans- I t ti h f I h ffi my 40mission not shown and which latter may be i t w driven, for example, bya turblne, also not HANS lVACIl.

shown; f is a driving shaft journalled in a. hearing 2' and connected tohollow shaft (1 by flanges e.

It will be seen that if the bearing a becomes worn, the shaft 9 may sagbut without affecting the bcaring of the gear wheels. It is possiblethat, owing to the elasticity of shaft 1 bearing 2' may remain true evenwhen 50 bearing a is a few millimetres out of true

